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Remove EH use from the Archive library and adjust its users accordingly.

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llvm-svn: 29066
This commit is contained in:
Reid Spencer 2006-07-07 19:09:14 +00:00
parent 00f6c95af4
commit 9f4deeabf4
4 changed files with 147 additions and 115 deletions
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24
include/llvm/Bytecode/Archive.h
View File

@ -438,12 +438,14 @@ class Archive {
/// name will be truncated at 15 characters. If \p Compress is specified,
/// all archive members will be compressed before being written. If
/// \p PrintSymTab is true, the symbol table will be printed to std::cout.
/// @throws std::string if an error occurs
/// @returns false if an error occurred, \p error set to error message
/// @returns true if the writing succeeded.
/// @brief Write (possibly modified) archive contents to disk
void writeToDisk(
bool writeToDisk(
bool CreateSymbolTable=false, ///< Create Symbol table
bool TruncateNames=false, ///< Truncate the filename to 15 chars
bool Compress=false ///< Compress files
bool Compress=false, ///< Compress files
std::string* error = 0 ///< If non-null, where error msg is set
);
/// This method adds a new file to the archive. The \p filename is examined
@ -481,9 +483,19 @@ class Archive {
/// @brief Write the symbol table to an ofstream.
void writeSymbolTable(std::ofstream& ARFile);
/// @brief Write one ArchiveMember to an ofstream.
void writeMember(const ArchiveMember& member, std::ofstream& ARFile,
bool CreateSymbolTable, bool TruncateNames, bool ShouldCompress);
/// Writes one ArchiveMember to an ofstream. If an error occurs, returns
/// false, otherwise true. If an error occurs and error is non-null then
/// it will be set to an error message.
/// @returns true Writing member succeeded
/// @returns false Writing member failed, \p error set to error message
bool writeMember(
const ArchiveMember& member, ///< The member to be written
std::ofstream& ARFile, ///< The file to write member onto
bool CreateSymbolTable, ///< Should symbol table be created?
bool TruncateNames, ///< Should names be truncated to 11 chars?
bool ShouldCompress, ///< Should the member be compressed?
std::string* error = 0 ///< If non-null, place were error msg is set
);
/// @brief Fill in an ArchiveMemberHeader from ArchiveMember.
bool fillHeader(const ArchiveMember&mbr,

219
lib/Bytecode/Archive/ArchiveWriter.cpp
View File

@ -184,13 +184,14 @@ Archive::addFileBefore(const sys::Path& filePath, iterator where) {
}
// Write one member out to the file.
void
bool
Archive::writeMember(
const ArchiveMember& member,
std::ofstream& ARFile,
bool CreateSymbolTable,
bool TruncateNames,
bool ShouldCompress
bool ShouldCompress,
std::string* error
) {
unsigned filepos = ARFile.tellp();
@ -235,8 +236,12 @@ Archive::writeMember(
// We don't need this module any more.
delete MP;
} else {
throw std::string("Can't parse bytecode member: ") +
member.getPath().toString();
if (mFile != 0) {
mFile->close();
delete mFile;
}
if (error)
*error = "Can't parse bytecode member: " + member.getPath().toString();
}
}
@ -263,7 +268,9 @@ Archive::writeMember(
data +=4;
fSize -= 4;
}
fSize = Compressor::compressToNewBuffer(data,fSize,output);
fSize = Compressor::compressToNewBuffer(data,fSize,output,error);
if (fSize == 0)
return false;
data = output;
if (member.isBytecode())
hdrSize = -fSize-4;
@ -307,6 +314,7 @@ Archive::writeMember(
mFile->close();
delete mFile;
}
return true;
}
// Write out the LLVM symbol table as an archive member to the file.
@ -364,9 +372,10 @@ Archive::writeSymbolTable(std::ofstream& ARFile) {
// This writes to a temporary file first. Options are for creating a symbol
// table, flattening the file names (no directories, 15 chars max) and
// compressing each archive member.
void
Archive::writeToDisk(bool CreateSymbolTable, bool TruncateNames, bool Compress){
bool
Archive::writeToDisk(bool CreateSymbolTable, bool TruncateNames, bool Compress,
std::string* error)
{
// Make sure they haven't opened up the file, not loaded it,
// but are now trying to write it which would wipe out the file.
assert(!(members.empty() && mapfile->size() > 8) &&
@ -379,104 +388,106 @@ Archive::writeToDisk(bool CreateSymbolTable, bool TruncateNames, bool Compress){
// Make sure the temporary gets removed if we crash
sys::RemoveFileOnSignal(TmpArchive);
// Ensure we can remove the temporary even in the face of an exception
try {
// Create archive file for output.
std::ios::openmode io_mode = std::ios::out | std::ios::trunc |
std::ios::binary;
std::ofstream ArchiveFile(TmpArchive.c_str(), io_mode);
// Create archive file for output.
std::ios::openmode io_mode = std::ios::out | std::ios::trunc |
std::ios::binary;
std::ofstream ArchiveFile(TmpArchive.c_str(), io_mode);
// Check for errors opening or creating archive file.
if ( !ArchiveFile.is_open() || ArchiveFile.bad() ) {
throw std::string("Error opening archive file: ") + archPath.toString();
}
// If we're creating a symbol table, reset it now
if (CreateSymbolTable) {
symTabSize = 0;
symTab.clear();
}
// Write magic string to archive.
ArchiveFile << ARFILE_MAGIC;
// Loop over all member files, and write them out. Note that this also
// builds the symbol table, symTab.
for ( MembersList::iterator I = begin(), E = end(); I != E; ++I) {
writeMember(*I,ArchiveFile,CreateSymbolTable,TruncateNames,Compress);
}
// Close archive file.
ArchiveFile.close();
// Write the symbol table
if (CreateSymbolTable) {
// At this point we have written a file that is a legal archive but it
// doesn't have a symbol table in it. To aid in faster reading and to
// ensure compatibility with other archivers we need to put the symbol
// table first in the file. Unfortunately, this means mapping the file
// we just wrote back in and copying it to the destination file.
// Map in the archive we just wrote.
sys::MappedFile arch(TmpArchive);
const char* base = (const char*) arch.map();
// Open another temporary file in order to avoid invalidating the mmapped data
sys::Path FinalFilePath = archPath;
FinalFilePath.createTemporaryFileOnDisk();
sys::RemoveFileOnSignal(FinalFilePath);
try {
std::ofstream FinalFile(FinalFilePath.c_str(), io_mode);
if ( !FinalFile.is_open() || FinalFile.bad() ) {
throw std::string("Error opening archive file: ") + FinalFilePath.toString();
}
// Write the file magic number
FinalFile << ARFILE_MAGIC;
// If there is a foreign symbol table, put it into the file now. Most
// ar(1) implementations require the symbol table to be first but llvm-ar
// can deal with it being after a foreign symbol table. This ensures
// compatibility with other ar(1) implementations as well as allowing the
// archive to store both native .o and LLVM .bc files, both indexed.
if (foreignST) {
writeMember(*foreignST, FinalFile, false, false, false);
}
// Put out the LLVM symbol table now.
writeSymbolTable(FinalFile);
// Copy the temporary file contents being sure to skip the file's magic
// number.
FinalFile.write(base + sizeof(ARFILE_MAGIC)-1,
arch.size()-sizeof(ARFILE_MAGIC)+1);
// Close up shop
FinalFile.close();
arch.close();
// Move the final file over top of TmpArchive
FinalFilePath.renamePathOnDisk(TmpArchive);
} catch (...) {
// Make sure we clean up.
if (FinalFilePath.exists())
FinalFilePath.eraseFromDisk();
throw;
}
}
// Before we replace the actual archive, we need to forget all the
// members, since they point to data in that old archive. We need to do
// we cannot replace an open file on Windows.
cleanUpMemory();
TmpArchive.renamePathOnDisk(archPath);
} catch (...) {
// Make sure we clean up.
// Check for errors opening or creating archive file.
if ( !ArchiveFile.is_open() || ArchiveFile.bad() ) {
if (TmpArchive.exists())
TmpArchive.eraseFromDisk();
throw;
if (error)
*error = "Error opening archive file: " + archPath.toString();
return false;
}
// If we're creating a symbol table, reset it now
if (CreateSymbolTable) {
symTabSize = 0;
symTab.clear();
}
// Write magic string to archive.
ArchiveFile << ARFILE_MAGIC;
// Loop over all member files, and write them out. Note that this also
// builds the symbol table, symTab.
for ( MembersList::iterator I = begin(), E = end(); I != E; ++I) {
if (!writeMember(*I,ArchiveFile,CreateSymbolTable,
TruncateNames,Compress,error))
{
if (TmpArchive.exists())
TmpArchive.eraseFromDisk();
ArchiveFile.close();
return false;
}
}
// Close archive file.
ArchiveFile.close();
// Write the symbol table
if (CreateSymbolTable) {
// At this point we have written a file that is a legal archive but it
// doesn't have a symbol table in it. To aid in faster reading and to
// ensure compatibility with other archivers we need to put the symbol
// table first in the file. Unfortunately, this means mapping the file
// we just wrote back in and copying it to the destination file.
// Map in the archive we just wrote.
sys::MappedFile arch(TmpArchive);
const char* base = (const char*) arch.map();
// Open another temporary file in order to avoid invalidating the
// mmapped data
sys::Path FinalFilePath = archPath;
FinalFilePath.createTemporaryFileOnDisk();
sys::RemoveFileOnSignal(FinalFilePath);
std::ofstream FinalFile(FinalFilePath.c_str(), io_mode);
if ( !FinalFile.is_open() || FinalFile.bad() ) {
if (TmpArchive.exists())
TmpArchive.eraseFromDisk();
if (error)
*error = "Error opening archive file: " + FinalFilePath.toString();
return false;
}
// Write the file magic number
FinalFile << ARFILE_MAGIC;
// If there is a foreign symbol table, put it into the file now. Most
// ar(1) implementations require the symbol table to be first but llvm-ar
// can deal with it being after a foreign symbol table. This ensures
// compatibility with other ar(1) implementations as well as allowing the
// archive to store both native .o and LLVM .bc files, both indexed.
if (foreignST) {
writeMember(*foreignST, FinalFile, false, false, false);
}
// Put out the LLVM symbol table now.
writeSymbolTable(FinalFile);
// Copy the temporary file contents being sure to skip the file's magic
// number.
FinalFile.write(base + sizeof(ARFILE_MAGIC)-1,
arch.size()-sizeof(ARFILE_MAGIC)+1);
// Close up shop
FinalFile.close();
arch.close();
// Move the final file over top of TmpArchive
FinalFilePath.renamePathOnDisk(TmpArchive);
}
// Before we replace the actual archive, we need to forget all the
// members, since they point to data in that old archive. We need to do
// this because we cannot replace an open file on Windows.
cleanUpMemory();
TmpArchive.renamePathOnDisk(archPath);
return true;
}

16
tools/llvm-ar/llvm-ar.cpp
View File

@ -484,7 +484,9 @@ void doDelete() {
}
// We're done editting, reconstruct the archive.
TheArchive->writeToDisk(SymTable,TruncateNames,Compression);
std::string errmsg;
if (!TheArchive->writeToDisk(SymTable,TruncateNames,Compression,&errmsg))
throw errmsg;
if (ReallyVerbose)
printSymbolTable();
}
@ -536,7 +538,9 @@ void doMove() {
}
// We're done editting, reconstruct the archive.
TheArchive->writeToDisk(SymTable,TruncateNames,Compression);
std::string errmsg;
if (!TheArchive->writeToDisk(SymTable,TruncateNames,Compression,&errmsg))
throw errmsg;
if (ReallyVerbose)
printSymbolTable();
}
@ -555,7 +559,9 @@ void doQuickAppend() {
}
// We're done editting, reconstruct the archive.
TheArchive->writeToDisk(SymTable,TruncateNames,Compression);
std::string errmsg;
if (!TheArchive->writeToDisk(SymTable,TruncateNames,Compression,&errmsg))
throw errmsg;
if (ReallyVerbose)
printSymbolTable();
}
@ -642,7 +648,9 @@ void doReplaceOrInsert() {
}
// We're done editting, reconstruct the archive.
TheArchive->writeToDisk(SymTable,TruncateNames,Compression);
std::string errmsg;
if (!TheArchive->writeToDisk(SymTable,TruncateNames,Compression,&errmsg))
throw errmsg;
if (ReallyVerbose)
printSymbolTable();
}

3
tools/llvm-ranlib/llvm-ranlib.cpp
View File

@ -74,7 +74,8 @@ int main(int argc, char **argv) {
if (!TheArchive)
throw err_msg;
TheArchive->writeToDisk(true, false, false );
if (!TheArchive->writeToDisk(true, false, false, &err_msg ))
throw err_msg;
if (Verbose)
printSymbolTable(TheArchive);